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arXiv · 2608.27819

ANCHOR: A Vision for Secure Persistent Key-Value Stores in Disaggregated Data Centers

Viraj Thakkar·Dongha Kim·Hokeun Kim·Zhichao Cao
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Abstract

Persistent key-value stores (PKVS) are increasingly deployed in disaggregated settings that split compute, memory, and storage across separate server pools. This shift redraws the trust boundary: data that would remain within a single machine is now transported, cached, and rewritten across multiple hosts, expanding exposure to both network attackers and intra-infrastructure adversaries. This paper presents ANCHOR, a vision for end-to-end integrity and freshness in disaggregated PKVS. ANCHOR proposes a two-part semantics-aware architecture: 1) Persistence path: ANCHOR outlines encrypting and authenticating PKVS persistent files and preventing rollback with manifest versioning. 2) Volatile path: ANCHOR treats caches, indexes, and filters as untrusted hints unless accompanied by verifiable provenance, enforced by a TEE-resident policy. Finally, we outline key invariants and discuss enclave-friendly batching and asynchronous I/O to amortize verification without undermining disaggregation's performance and elasticity benefits.

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Viraj Thakkar, Dongha Kim, Hokeun Kim, Zhichao Cao. 2026-08-28. ANCHOR: A Vision for Secure Persistent Key-Value Stores in Disaggregated Data Centers. https://doi.org/10.1145/3807894.3810275

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